Amino acids
L-arginine
An amino acid from meat, nuts and seeds. Your body uses it to make nitric oxide, a gas that helps blood vessels widen.
110 products from US online stores, sorted by what 3 g of arginine costs – not by the price per pack.
$0.11Lowest cost
per 3 g arginine
- Prices checked Nov 1, 2026, US
- No paid placements
What does 3 g mean?
- arginine per serving in most of the products we checked
- 0.5–5 garginine per serving in most of the products we checked
- 3 g is a fixed amount to compare by: half of the 110 products we checked have up to 1 g per serving, the other half more.
- There’s no official daily amount for arginine.
We compare by 3 g only so products line up – it’s not a recommendation. Not medical advice.
Where products miss quality points
How the 110 products score
- Very good 90+: 6
- Good 75+: 101
- Fair 60+: 1
- Low under 60: 2
2 products contain titanium dioxide – a food authority has banned, restricted or flagged it as a possible health risk. Their score is cut in half, so it’s always in the red range. Each product says why.
- have no seal from an independent testing program
- 95%have no seal from an independent testing program10 of 30 testing points for GMP, 15 for the 18 whose label says “third-party tested”
The full 30 testing points need an independent test. Every supplement sold in the US is made under the FDA’s GMP rules – the maker checks its own products, which gives 10 points. A seal from a testing program like NSF, USP or Informed Choice means a lab outside the company checks that what’s inside matches the label. Most brands don’t take part. That doesn’t make a product bad – without a seal, a clean product still gets up to 80.
We find seals on the label and in NSF’s public lists. USP and Informed Choice don’t let us search their lists automatically, so a seal that’s only in their lists can be missing. How the score works
Pack size
Compare packs of a similar size.
All sizes in one list can affect the results – big packs usually cost less per 3 g. Pick a size above to compare packs that are alike.
110 products · cheapest per 3 g arginine first
- Rank 1
Best Naturals
L-Arginine Powder
Powder
80Good qualityMade in USA$0.11per 3 g
Lowest
- Pack
- $16.14454 g (1 lb)99 servings
- Arginine per serving
- 4.6 gin 4.6 g
- Pack lasts
- 151 daysif you take 3 g a day
shopbestnaturals.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 2
Vitamatic
L-Arginine Powder Pouch
Powder
80Good qualityCountry not stated$0.11per 3 g
1% more
- Pack
- $17.99500 g (1.1 lb)100 servings
- Arginine per serving
- 5 gin 5 g
- Pack lasts
- 166 daysif you take 3 g a day
vitamaticusa.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 3
Amazing Nutrition
Amazing Formulas L-Arginine - Powder
Powder
80Good qualityMade in USA$0.11per 3 g
4% more
- Pack
- $36.99997 g (2.2 lb)997 servings
- Arginine per serving
- 1 gin 1 g
- Pack lasts
- 332 daysif you take 3 g a day
amazingnutrition.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 4
Nutricost
L-Arginine, Unflavored
Powder
85Good qualityPacked in USA$0.12per 3 g
8% more
- Pack
- $38.481 kg (2.2 lb)200 servings
- Arginine per serving
- 5 gin 5 g
- Pack lasts
- 333 daysif you take 3 g a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 5
Nutricost
L-Arginine Powder
Powder
80Good qualityCountry not stated$0.12per 3 g
10% more
- Pack
- $38.971 kg (2.2 lb)200 servings
- Arginine per serving
- 5 gin 5 g
- Pack lasts
- 333 daysif you take 3 g a day
nutricost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 6
Nutricost
L-Arginine, Unflavored
Powder
85Good qualityPacked in USA$0.14per 3 g
30% more
- Pack
- $23.05500 g (1.1 lb)100 servings
- Arginine per serving
- 5 gin 5 g
- Pack lasts
- 166 daysif you take 3 g a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 7
NOW Foods
Sports, L-Arginine Powder
Powder
100Very good qualityPacked in USA$0.14per 3 g
33% more
- Pack
- $47.171 kg (2.2 lb)167 servings
- Arginine per serving
- 6 gin 6 g
- Pack lasts
- 333 daysif you take 3 g a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 8
Best Naturals
L-Arginine
Powder
80Good qualityPacked in USA$0.14per 3 g
34% more
- Pack
- $21.55454 g (1 lb)99 servings
- Arginine per serving
- 4.6 gin 4.6 g
- Pack lasts
- 151 daysif you take 3 g a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 9
Nutricost
L-Arginine Powder
Powder
85Good qualityMade in USA$0.15per 3 g
41% more
- Pack
- $24.97499 g (1.1 lb)100 servings
- Arginine per serving
- 5 gin 5 g
- Pack lasts
- 166 daysif you take 3 g a day
nutricost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 10
BulkSupplements
L-Arginine HCl Powder
Powder
80Good qualityCountry not stated$0.16per 3 g
52% more
- Pack
- $26.97500 servings
- Arginine per serving
- 1 g
- Pack lasts
- 166 daysif you take 3 g a day
bulksupplements.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 11
NOW Foods
Sports, L-Arginine Powder
Powder
100Very good qualityCountry not stated$0.16per 3 g
52% more
- Pack
- $24.49454 g (1 lb)76 servings
- Arginine per serving
- 6 gin 6 g
- Pack lasts
- 151 daysif you take 3 g a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 12
Nutricost
L-Arginine Powder
Powder
85Good qualityMade in USA$0.18per 3 g
69% more
- Pack
- $14.97249 g (8.8 oz)50 servings
- Arginine per serving
- 5 gin 5 g
- Pack lasts
- 83 daysif you take 3 g a day
nutricost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 13
ALLMAX
Arginine HCI
Powder
80Good qualityMade in USA$0.19per 3 g
76% more
- Pack
- $24.99400 g (14.1 oz)80 servings
- Arginine per serving
- 5 gin 5 g
- Pack lasts
- 133 daysif you take 3 g a day
allmaxnutrition.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 14
Doctor's Best
Pure L-Arginine Powder
Powder
80Good qualityCountry not stated$0.19per 3 g
77% more
- Pack
- $18.99301 g (10.6 oz)50 servings
- Arginine per serving
- 6 gin 6 g
- Pack lasts
- 100 daysif you take 3 g a day
drbvitamins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 15
Healthy Origins
L-Arginine Powder
Powder
80Good qualityCountry not stated$0.19per 3 g
77% more
- Pack
- $18.99301 g (10.6 oz)60 servings
- Arginine per serving
- 5 gin 5 g
- Pack lasts
- 100 daysif you take 3 g a day
healthyorigins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 16
Doctor's Best
Pure L-Arginine Powder
Powder
80Good qualityCountry not stated$0.19per 3 g
78% more
- Pack
- $18.99300 g (10.6 oz)50 servings
- Arginine per serving
- 6 gin 6 g
- Pack lasts
- 100 daysif you take 3 g a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 17
ALLMAX
Essentials, Arginine HCl
Powder
80Good qualityMade in USA$0.21per 3 g
95% more
- Pack
- $27.74400 g (14.1 oz)80 servings
- Arginine per serving
- 5 gin 5 g
- Pack lasts
- 133 daysif you take 3 g a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 18
BulkSupplements
L-Arginine L-Pyroglutamate Powder
Powder
80Good qualityCountry not stated$0.22per 3 g
102% more
- Pack
- $71.97667 servings
- Arginine per serving
- 1.5 g
- Pack lasts
- 333 daysif you take 3 g a day
bulksupplements.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 19
Nutricost
L-Arginine, Unflavored
Powder
85Good qualityMade in USA$0.23per 3 g
113% more
- Pack
- $18.95250 g (8.8 oz)50 servings
- Arginine per serving
- 5 gin 5 g
- Pack lasts
- 83 daysif you take 3 g a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 20
Vitacost
L-Arginine, 1,000 mg
Tablets
80Good qualityMade in South Korea or USA$0.25per 3 g
133% more
- Pack
- $24.85300 tablets
- Arginine per serving
- 1 gin 1 tablet
- Pack lasts
- 100 daysif you take 3 tablets (3 g) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 21
Best Naturals
L-Arginine 1000mg
Tablets
80Good qualityMade in USA$0.25per 3 g
134% more
- Pack
- $9.99120 tablets
- Arginine per serving
- 1 gin 1 tablet
- Pack lasts
- 40 daysif you take 3 tablets (3 g) a day
shopbestnaturals.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 22
fitcode
L-Arginine
Capsules
80Good qualityMade in USA$0.25per 3 g
136% more
- Pack
- $6.30100 capsules50 servings
- Arginine per serving
- 1.5 gin 2 capsules
- Pack lasts
- 25 daysif you take 4 capsules (3 g) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 23
Nutricost
L-Arginine, 1,000 mg
Tablets
85Good qualityPacked in USA$0.26per 3 g
143% more
- Pack
- $25.95300 tablets
- Arginine per serving
- 1 gin 1 tablet
- Pack lasts
- 100 daysif you take 3 tablets (3 g) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 24
EVLution Nutrition
L-Arginine, 1 g
Tablets
80Good qualityMade in USA$0.27per 3 g
158% more
- Pack
- $8.2590 tablets
- Arginine per serving
- 1 gin 1 tablet
- Pack lasts
- 30 daysif you take 3 tablets (3 g) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 25
Amazing Nutrition
Amazing Formulas L-Arginine - 500 Mg
Capsules
80Good qualityMade in USA$0.28per 3 g
159% more
- Pack
- $22.99500 capsules
- Arginine per serving
- 0.5 gin 1 capsule
- Pack lasts
- 83 daysif you take 6 capsules (3 g) a day
amazingnutrition.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 26
Carlson
L-Arginine Powder
Powder
80Good qualityCountry not stated$0.28per 3 g
163% more
- Pack
- $93.501 kg (2.2 lb)333 servings
- Arginine per serving
- 3 gin 3 g
- Pack lasts
- 333 daysif you take 3 g a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 27
NutraBio
Arginine Powder
Powder
70Fair qualityMade in USA$0.29per 3 g
171% more
- Pack
- $23.99249 g (8.8 oz)166 servings
- Arginine per serving
- 1.5 gin 1.5 g
- Pack lasts
- 83 daysif you take 3 g a day
nutrabio.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 28
Nutricost
L-Arginine Tablets
Tablets
85Good qualityCountry not stated$0.29per 3 g
172% more
- Pack
- $28.97300 tablets
- Arginine per serving
- 1 gin 1 tablet
- Pack lasts
- 100 daysif you take 3 tablets (3 g) a day
nutricost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 29
Amazing Nutrition
L-Arginine - 1000 Mg
Tablets
85Good qualityCountry not stated$0.30per 3 g
181% more
- Pack
- $11.99120 tablets
- Arginine per serving
- 1 gin 1 tablet
- Pack lasts
- 40 daysif you take 3 tablets (3 g) a day
amazingnutrition.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 30
Amazing Nutrition
L-Arginine, 1,000 mg
Tablets
80Good qualityCountry not stated$0.30per 3 g
183% more
- Pack
- $12.09120 tablets
- Arginine per serving
- 1 gin 1 tablet
- Pack lasts
- 40 daysif you take 3 tablets (3 g) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 31
Best Naturals
L-Arginine 500 mg
Capsules
80Good qualityMade in USA$0.31per 3 g
192% more
- Pack
- $12.99250 capsules
- Arginine per serving
- 0.5 gin 1 capsule
- Pack lasts
- 41 daysif you take 6 capsules (3 g) a day
shopbestnaturals.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 32
Nutricost
L-Arginine, 1,000 mg
Tablets
85Good qualityPacked in USA$0.32per 3 g
199% more
- Pack
- $15.95150 tablets
- Arginine per serving
- 1 gin 1 tablet
- Pack lasts
- 50 daysif you take 3 tablets (3 g) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 33
Vitacost
L-Arginine HCl
Capsules
80Good qualityCountry not stated$0.33per 3 g
209% more
- Pack
- $19.79200 capsules100 servings
- Arginine per serving
- 1.8 gin 2 capsules
- Pack lasts
- 50 daysif you take 4 capsules (3.6 g) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 34
Carlson
L-Arginine Powder
Powder
80Good qualityCountry not stated$0.33per 3 g
212% more
- Pack
- $110.00992 g (2.2 lb)331 servings
- Arginine per serving
- 3 gin 3 g
- Pack lasts
- 330 daysif you take 3 g a day
carlsonlabs.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 35
Vitamatic
L-Arginine 500mg
Capsules
80Good qualityMade in USA$0.33per 3 g
212% more
- Pack
- $9.99180 capsules
- Arginine per serving
- 0.5 gin 1 capsule
- Pack lasts
- 30 daysif you take 6 capsules (3 g) a day
vitamaticusa.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 36
GAT
L-Arginine
Tablets
80Good qualityCountry not stated$0.33per 3 g
212% more
- Pack
- $19.99180 tablets
- Arginine per serving
- 1 gin 1 tablet
- Pack lasts
- 60 daysif you take 3 tablets (3 g) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 37
Vitamatic
L-Arginine - Amino Acid Supplement
Tablets
80Good qualityCountry not stated$0.35per 3 g
228% more
- Pack
- $13.99120 tablets
- Arginine per serving
- 1 gin 1 tablet
- Pack lasts
- 40 daysif you take 3 tablets (3 g) a day
vitamaticusa.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 38
Nutricost
L-Arginine Tablets
Tablets
30Low qualityCountry not stated$0.36per 3 g
237% more
- Pack
- $17.97150 tablets
- Arginine per serving
- 1 gin 1 tablet
- Pack lasts
- 50 daysif you take 3 tablets (3 g) a day
nutricost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 39
Amazing Nutrition
Amazing Formulas L-Arginine - 500 Mg
Capsules
80Good qualityMade in USA$0.36per 3 g
237% more
- Pack
- $14.99250 capsules
- Arginine per serving
- 0.5 gin 1 capsule
- Pack lasts
- 41 daysif you take 6 capsules (3 g) a day
amazingnutrition.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 40
Amazing Nutrition
Pure Naturals L-Arginine 500 Mg Amino Acid Supplement
Capsules
80Good qualityMade in USA$0.36per 3 g
237% more
- Pack
- $14.99250 capsules
- Arginine per serving
- 0.5 gin 1 capsule
- Pack lasts
- 41 daysif you take 6 capsules (3 g) a day
amazingnutrition.com (opens in a new tab)Checked Nov 1, 2026 · Label
Good to know
- Fact
- 3,922%more per 3 g for the most expensive product than for the cheapest.
- Fact
- 836%more per 3 g for the cheapest softgels than for the cheapest powder.
How we checked: one-time price for each size in the store’s US online shop, before sales tax and shipping, without subscriptions or coupons. Prices change often, so check the store before you buy. More on how we check
The amount we compare by only makes products comparable – it is not a dosage recommendation. Not medical advice.
How we calculate
Cost per dose = price ÷ (servings × amount per serving) × comparison amount. Example: $119.99 for 74 servings with 24 g of protein each is 1,776 g of protein. $119.99 ÷ 1,776 g × 30 g = $2.03 per 30 g of protein.
Found a mistake or a product we should add? Email us